Slicing-knife.



J. T. DWYER.

SLICING KNIFE.

APPLICATION FILED AUG.29, 1916.

LQQfifi? 1 Patented Nov 21, 1916.

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Specification of Letters Patent neonatal,

ap lication area August as, role. Serial No. 117,553.

To all whom it may concern:

. to provide slicing knives of the character de scribed, the blades ofwhich are adjustable laterally of one another or with respect to acentral blade rigid with the handle, so as to enable the user to cut aplurality of slices from a body of material, such as bread, calre, etc.,at one operation, said slices of the desired thickness; to providelrnives of the character described which are capable of fine adjustmentso that it is possible to provide a predetermined number of slices ofmaterial from each of several masses of foodstuff of uniform size, oncethe distance between the blades is gaged; and, to provide knives of thecharacter described which may be adjusted to cut relatively thin slicesof material from bodies, such as hams or beets,

or to cut relatively thick slices as from loaves of bread, etc. Utherobjects of my invention will appear in the following detaileddescription, taken in connection with the accompanying ing, formingapart of this specification, and in which drawing:

Figure l is a perspective view of a hiife embodying my invention, thebades of which dll enter a body of material, such as a loaf of bread, tocut slices therefrom. Fig. 2 is a side elevation of the knife, portionsof the blade being removed to condense the view. Fig. 3 is a fragmentaryhorizontal sectional view through the knife at that portion where theblades are in coupled relation with the handle. Fig. l is a perspectiveview of a bushing which may form a knife.

In the drawing, where similar characters refer to similar partsthroughout the views, A. designates a carrier or handle; B a blade rigidwith said handle; C a plurality of blades movable toward'and from eachother and toward and from blade B; D means for adjusting the position ofblade B with redrawpart of the.

spect to each other and with respect to blade B; and, E a scalefacilitating adjustment to provide slices of material, of predeterminedthickness.

Referring first to the handle it, it may he made of any suitablematerial, such as wood, metal, or fiber, and is formed to provide two 1arms 5 in spaced relation at one end portion of the handle, said armsbeing preferably slotted inwardly from their ends, as indi cated at 6,for a purpose to be subsequently set forth As tothe blade B, it ispreferably disposed in the longitudinal axis of the handle Patented Nov,21, 1M6,

so as to project therefrom at that end between the arms 5, the bladebeing provided with a tang i which extends into the main body portion ofthe handle and is secured iii-place, as hereinafter described, byrivet'8.

lhe blade B is also preferably provided with a perforation 9, the axisof which is transversely of the blade and adjacent the handle A, thesaid axis extending through the slot 6 of arms 5 Referring now to theblade 0, in the example shown, two are provided, one at each side of theblade B and in parallel relation thereto, each blade G being providedwith a screw-threaded bore 10, the threads of the bore of one bladeextending in a direction counter to that of the threads of the otherblade.

Referring now tothe means D for adjusting the position of blades C withrespect to each other and with respect to the blade B, it comprises arevoluble member 11 a thumb-wheel 12 rigid therewith; and preferably abushing 13 having the dual function of retaining the blades B and C insubstantially the same plane, and retaining the revo-luble member'll inoperative relation to the handle A. lhe revoluble member 11 is providedwith two screwthreaded sections 14 and 15., the threads of one sectionextending in a direction counter to those of the other section, and'saidsections separately in screw-threaded engagernent with the movableblades 0, the screw-threaded sections extending through the bores 10 ofsaid blades. The said revoluble member is also provided with acylindrical portion 16 which extends through the perforation 9 of bladeB,'the ends of the revoluble member being preferably reduced as at 17and lying in the slots 6 of arms 5. lhe bushing 13 is protill? ber 11.The main body portion 18 is also slotted as at 21. for the reception ofthe tang 7 of blade B.

In order to retaln the bushing 13 in place,

' a plate E is provided, secured to the handle A as by screws 22 inscrew-threaded engagement with the arms 5, this plate being providedwith graduations 23 which facilitate the spacing of the blades C apredetermined distance from the blade B as is obvious from an inspectionof Fig. 1 of the-drawing.

In assembling the blades into operative 'relation to the handle. and tothe means D the revoluble member 11 may be first passed through theperforation 9 of blade B, whereafter the blades C are fed upon thescrew-threaded sections of the revoluble member. These elements are thenassembled into operative relation to the handle A, as by driving thetang 7 into the handle, the end portions 17 of the revoluble member 1 11extending into the slot '6. The bushing 13. is then passed downwardlywith the walls of slotsQQ embracing the end portions of the revolfiblemember, and the'slot 21' accommodating the tang 7 of the blade B. Afterthe bushing is in place, the blade B may be driven tightly intoengagement with the handle A so that theend portions transversely of,the blades C engage the main body portion 18 of bushing 13, maintainingall of the blades in substantially the same plane. The rivet 8 may thenbe fixed extending through the handle A and through the tang 7, afterwhich the plate E may be disposed into operative relation "to the handlepreventing casual displacement of the bushing 13. Adjustment may beattained by rotating the thumb-wheel 12 which, in one direction, movesthe blades C toward each other and toward the blade B, whereas, if movedin a counter-direction, the said blades C are moved away from each otherand away from the blade B. The

operator may gage the distance between blades by reference to thedelineations on plate E.

Changes in details maybe made with-,

out departingv from the spirit or scope ofv my invention; but, K i

I claim:

1. A slicing knifecomprising-in combination, a handle, a blade rigidtherewith, two blades movable with respect to said handle and disposedone-at each side of said rigid blade in parallel relation thereto, andmeans "tion, a handle, two and from each other laterally,

relation at one end I dle,

thread of. one section for moving said second-mentioned bladessimultaneously toward or from said rigid blade and retaining the same inan adjusted position with respect thereto.

' 2. A slicing knife comprising in combination, a handle, a blade rigidtherewith, two blades movable with respect to said handle and disposedone at each side of said rigid blade in parallel relation thereto, and arevoluble member carried by provided with,,screw-threaded sections, thethread of one section extending in a direction counter to that of theother section, and said sections separately in screwthreaded engagementwith said movable blades.

3. A slicing knife comprising in combinablades movable toward guided bysaid handle, and a" revoluble member carriedby said handle and providedwith screwthreaded sections, the thread of one section extending in adirection counter to that of the other section, and said sectionsseparately in screw-threaded engagement with said blades. A 4

4.. A slicing knife comprising in combination, a handle including twoarms in spaced portion thereof, a U- shaped bushing, the main .body ofwhich lies transversely of the axis of and adjacent.

' said handle between the said arms thereof,

with the arms of said bushing engaging the confronting faces-of saidarms of said hantwo blades movable toward or from each other laterally,with ends engaging. and slidable over thefaceof the main body of saidbushing, and a revoluble member carried and extending between'the saidarms of said handle, said revoluble member being provided withscrew-threaded sections, the

extending in a direc-" tion counter to that of the other section, andsaid sections separately in screw-threaded I engagement with saidblades.

5. A slicing knife comprising in combina tion, a handle including twoarms in spaced relation at one end portion thereof, a bushing lyingtransversely of the axis of and adjacent said handle between the saidarms thereof,-two.arms movable toward and from each other laterally,with ends engaging and said handle and i revoluble member carried by andextending between the said arms of said handle, said revoluble memberbeing provided with screw-threaded sections, the thread of one sectionextending in a direction counter to separately in screw-threadedengagement with said blades.

6. A slicing knife comprising in combination, a handle including twoarms in spaced relation at one end portion thereof, said arms providedwith slots, a U-shaped bushthat of the other section, and said sectionsing, the main body portion oftvlhich lies transversely of the axis ofand adjacent said handle between the said arms thereof, the arms of saidbushing engaging the confronting faces of said arms of said handle, thesaid arms of said bushing provided with slots at right angles to theslots of the said arms of said handle to provide bearings, two bladesmovable toward and from each other laterally, with ends engaging andslidable over the face of the said main body of said bushing, and arevoluble member extending between the said arms of said handle andthrough the said slots of said bushing, said revoluble member providedwith screw-- threaded sections, the thread of one section extending in adirection counter to that of 'the other section, and said sectionsseparately' in screw-threaded engagement with said movable blades.

7. A slicing knife comprising in combination, a handle, including twoarms in spaced relation at one end portion thereof, said arms providedwith slots, a U-shaped bushing, the main body portion of which liestransversely of the axisof and adjacent said handle between the saidarms thereof, the arms of said bushing engaging the confront ingfaces ofsaid arms of said handle, the said arms of said bushing provided withslots at right angles to the slots of the said arms of said handle toprovide bearings, two blades movable toward and from each otherlaterally, with ends engaging and slidable over the face of the saidmain body of said bushing, a revoluble member extending between the saidarms of said handle and rately in screw-threaded engagement with saidmovable blades, and a plate extending over said bushing and secured tosaid handle, said plate provided withdelineations parallel with theplanes of said blades.

8. A slicing knife comprising in combination, a handle including twoarms in spaced relation at one end portion thereof, a U- shaped bushing,the main body of which lies transversely of the axis of and adjacentsaid handle between said arms thereof, the arms of said bushing engagingthe confronting faces of said arms of said handle, a blade rigid withsaid handle and including a tang extending through the said main body ofsaid bushing, the said arms of said bushing provided with slots at rightangles to the slots of the said arms of said handle to provide bearings,two blades movable toward and from each other laterally, with endsengaging and slidable over theface of the said main body of saidbushing,and a revoluble member extending between the said arms of JOHN T. nwrna.

